1. 10

    We can invent only with memory.

  2. 9

    The real use of gunpowder is to make all men tall.

  3. 8

    We owe to the Middle Ages the two worst inventions of humanity -- gunpowder and romantic love.

  4. 7

    Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

  5. 6

    Today every invention is received with a cry of triumph which soon turns into a cry of fear.

  6. 5

    Fear is a great inventor.

  7. 4

    Inventing is a combination of brains and materials. The more brains you use, the less material you need.

  8. 3

    The guns and bombs, the rockets and the warships, all are symbols of human failure.

  9. 2

    I am proud of the fact that I never invented weapons to kill.

  10. 1

    Accident is the name of the greatest of all inventors.